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Finding the Fourth Proportional to 1,812.55, 2,717.97 and 702.49

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Solution

The fourth proportional to 1,812.55, 2,717.97 and 702.49 is: 1,053.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.55 : 2,717.97 = 702.49 : x
  2. Step 2: Convert to fraction form
    1,812.55/2,717.97 = 702.49/x
  3. Step 3: Cross multiply
    1,812.55x = 2,717.97 × 702.49
  4. Step 4: Simplify right side
    1,812.55x = 1,909,346.75
  5. Step 5: Solve for x
    x = 1,909,346.75/1,812.55
  6. Step 6: Final answer
    x = 1,053.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.